Muffler.



M. SHLOSBERG. MUFFLER,

APPLICATION PiLED D2018, 1912.

1,067,200. Patented July 8,1913.

JaweMar Mans 51210.96

' UNITED STATES P rnNT ourron.

MARIS SHLOSBERG, OF CHICAGO, ILLINOIS, ASSIGNOR TO AERMORE MANUFACTURING COMPANY, OFOHICAGO, ILLINOIS, A CORPORATION OF'ILLINOIS,

MUFFLER.

Specification of Letters Patent.

Patentedduly*8,1913-.

Application filed December 18, 1912. Serial No. 737,375.

To all whom it may concern.

Be it known that I, Mains SHLOSBERG, a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Mufliers, of which the following is a specification.

My intention relates to mufflers, and has more particular reference to mufflers for an exhaust fluid such as air, steam, or the gases from internal combustion engines, such, for instance, as are used on automobiles, motorcycles, and the like.

The principal objects of my invention are to provide a niuflier for exhaust fluids which shall permit the ready passage of fluids under pressure therethrough, which shall not induceback pressure in the pipe or conduit leading to the mufiter, which shall deaden the sound of exhaust into the air so as to render such sound unobjectionable, which shall be of simple construction, easyto as semble and take apart, which shall be easily cleaned, which shall be of li ht weight and occupy small space, thus ren ering the same convenient of location and use, which shall be cheap of manufacture, strong and durable, and of pleasing contour.

Further objects will appear hereinafter.

In the accompanying drawings, which form a part of this specification, I have illustrated a preferred embodiment of these improvements.

In these drawings Figure l is a side view of the mutller complete; Fig. 2 is a longitudinal section through the middle of the structure shown in Fig. 1; Figs. 5, 4 and 5 are transverse sections taken respectively on the lines 3- 3, 4-4, 5-5 of Fig. 2, viewed in the direction of the arrows; Figs. 6 and 7 are side views of two of the perforated cone-shaped partiti ms or battles shown in Fig. 2.

The outer shell or easing A of the muffler comprises preferably two truncated cone-shaped members 11 and 12, the former being provided with an inlet pipe or connection ill adapted to be attached to a fluid exhaust pipe (not shown), the member 12 preferably having an outlet or discharge pipe 14 although such an (extension of or addition to the member 12 is not necessary in some uses of the mufiler. The member 11 pipe 13 soas to of the casing A is provided with an'annular oustanding flange 15 at its base portion and the member 12 is provided with a similar flange 16, said flange 16 carrying a circumferential band or portion 17 at substantially right angles to the flange 16 adapted to cover the edges of the several bases of the bafile plates within the casing 12.. The 'two easing members 11 and '12 are adapted to be secured together, preferably so they may be readily detached, as by means of a. plurality of bolts and nuts 18, such fastening means being preferably located in'recesses 19 formed in each of the members 11- andrl2.

A tubular partition or battle 20,prferably tapering forward to its smaller tioned within the inlet pipe 13, thus also reinforcing said inlet. pipe The-battle 20 is provided with a plurality of perforations 21, distributed throughout its surface, the total area of the perforations 21 preferably somewhat exceeding the area .of the inlet permit a ready escape of the exhaust fluid throughthis ba-flie 20.- Extending toward the outlet 14 and preferably within the casing member '12 of the shell I provide a plurality of coaxially arranged cone-shaped perforated partitions, .bafiles, or diaphragms 22, 23 and 24, saidibafiieszeach being provided with an annular flange 25 constituting its base, said bafiie flanges being adapted to be seated between the flanges- 15 and 16 of the shell members 11 and 12 and rigidly secured to each other and to the outer casing means of the boltsand nuts Thus the battles have essentially a coin- H1011 base, or in other words, their bases-are in substantially the same transverse plane through the mutiter i'n thepreferred construction.

The partitions or baffles 29., and 245- preferably have their apices substantially in aliuement with each other, the altitude of ca -h conical battle forward of batile 22 being greaterthan that of the battle next toward the inlet. These last mentioned battles are also provided with a,plurality of exhaust perforations or apertures which are distributed over the entire surface of the batltes respectively.

end, which end is preferably left open, is secured to t-he casing member 11, preferably by-mans of a cylindrical extension on said bafile and posi- From the foregoing it will beseen that having their bases the exhaust fluid entering the connection 13 will first escape through the perforations 21 in the battle 20 and is projected outwardlyin small streams which strike the -*i'uner 'wall of the casing 11 and are deflected f opportunity to expand and cool, and as this chamber is filled with direct and reflected forward owing to the angular disposition of this wall. VVithin the relatively large chamber into which the exhaust fluid is first discharged the compressed gases have currents whose respective lines of travel crcssea'eh other, they are thus'neutralized to a considerable extent, and the exhaust fluid is quickly placed under reduced pressure and travel.

After the fluid has passed through the perforations in the bafile 22, the streams thereof caused by the apertures strike the partition 23, and radually escape through .the perforations t ereof'into the chamber formed between the partition plates 23 and 24. From the last mentioned chamber the fluid escapes into a chamber, the outer wall of which is the casing member 12, and thence into the exhaust pipe 14, whence it may be conveyed 'to any desired point or be discharged into the open air. The number of baflles within the casing may be varied to vvsuit particular requirements, and it w'illreadilybe seen that the same casing maybe-used fora. larger. or smaller numher of 'bafiles as desired, and the number may beadd'edto or subtracted from at will.

Lhave found that the number of partitions shown in the drawing will prove sutlicient for an exhaust of high'pressure and he I "quency ofimpulse, and that a niufller constructedas herein illustrated and described, is practicallynoiseless in operation and provides a ready escape for the exhaust fluid without a preciable back pressure.

All of t e parts with the exception of the bolts and nuts may be made of sheet metal whichcan easily be stamped, rolled or drawn into the' proper shape in ways well understood in the art.

I :Whi le Ihave illustrated and described a preferred embodiment of my improvemdhts, various changes and modifications may be made in details of construction and arrange- I ment without departing from the-spirit of my invention, and all such changes and modifications are contemplated and intended as come within the scope. of the appended claims.

I. claim:

1.-In .a mutfler, the combination of an outer shell having an outlet and an inlet, said inlet adapted to be attached to a fluid exhaust pipe, and a plurality of cone-shaped partitions, each having a. plurality of per forations therein spaced from the apex portion thereof respectively, said. partitions in substantially the sai'ne transverse plane through said shell, substantially as described.

2. In a niuliler, the combination of an outer shell having; an outlet and having an inlet adapted to be attached to a fluid exhaust pipe, and a plurality of cone-shaped battles, each having a plurality of perforations therein spaced from their apex portions respectii-ely, and having their bases in substantially the same transverse plane through said shell and having difierent altitudes, substantially as described.

3. In a inutl ler, the combination of 2: casing having a portion thereof cone-shaped, said casing having an inlet and an outlet, and a plurality of cone-shaped battles, each having a plurality of perforations therein spaced from their apex portions respectively, said battles having substantially the same sized base, said bases being in sub stantially the same transverse plane through said casing, substantially as described.

4. In a. inuitler, the combination of an outer shell having an inlet adapted to be attached to a fluid exhaust pipe, and having an outlet, a plurality of perforated coneshaped partitions having their bases nearest said inlet and their spices pointed toward said outlet, said bases being in substantially the same transverse plane through said shell, substantially as described.

In a mufller, the coi'nbination of an outer shell having an inlet adapted to be attached to a fluid exhaust pipe, and having an outlet, a perforated cone-shaped ballle within said. shell and secured thereto at the inner end of said. inlet, and a plurality of perforated cone-shaped partitioi'is having their bases in substantially the same transverse plane through said shell, substantially as described. v

6. In muffler, the combination of an outer shell comprising two cone-shaped members secured together at their base por tions and having an inlet and an outlet, and a plurality of perforated coneshaped partitions haying altitudes of different length, their 'apicles pointing in the same direction, and their bases in substantially the same transverse plane through said shell, substantially as described.

7. In a muffler, the combination of an outer shell comprising two cone -shaped members detachably secured together at their base portions and having an inlet and an outlet, a perforated cone-shaped partition -inounted within said shell and adjacent to said inlet, and a plurality of perforated cone-shaped partitions having their 3.131068 pointed in the same direction and having their bases in substantially the same trans' verse plane through said shell, substantially as described.

8. In a mulllei', the combination of an members, one having an inlet and the other an outlet at its apex, means for detachably securing said cone-shaped members together, a perforated cone-shaped member mounted within said shell and adjacent .to the inlet thereof, and a plurality of perforated coneouter shell comprising two cone-shaped) shaped partition mounted within said shell and having their apices pointed toward the outlet thereof, substantially described.

9. In a muffler, the combination of a shell having an inlet and a single tubular discharge baflle Within said shell, one end of said baffle being connected to said shell at said inlet opening, the other end thereof terminating free of any other battle, substantially as described.

10. In a mutller, the combination of a shell having an inlet and a discharge opening, a perforated tubular baffle having one end thereof connected to said shell at said inlet opening, said battle tapering forward to a smaller diameter, substantially as described.

11. In a muffler, tl1ec01nl')i1n1tion of a shell l having an inlet and a discharge opening. a I perforated tubular baffle having one end thereof connected to said shell-at said inlet opening, said baflle tapering forward to a smaller diameter, and a battle between said I tubular baflle and said discharge opening l substantially as described. l

12. In a. mutllcr, the combination of an outer shell having an outlet and an inletl said inlet adapted to be attached to a fluid 1 exhaust pipe, a plurality of concshapedl partitions, a plurality of said partitions hav ing a plurality of perforations therein spaced from their apex portions respectively, l said partitions having their bases in sub-t stantially the same transverse plane through i said shell, and a tubular battle secured to said i shell at one of the ends thereof, said tubular baffle terminating short of any other battle, substantially described.

13. In a' mufllcr, the combination of a shell having an inlet and a discharge openin a perforated tubular battle having, one end thereof connected to said shell at said inlet opening, the other end thereof terminating free of any other battle, and a battle between said tubular bafile and said discharge opening, substantially as described.

14. In a muffler, the combination of a shell having an inlet and a discharge opening. a perforated tubular batlle having one end thereof connected to said shell at sa d inlet opening, one end of said tubular batlle tcrmh nat ing' short of the discharge o iening of said inutller, and a batlle between said tubular battle and said discharge opening. substantially as described.

15. A mufller of the character described comprising, in combination: an outer shell comprising two cone shaped members, each having a pipe section at its apex, one of which is adapted. to serve as an inlet. and the other of which is adapted to serve as an outlet; means for detachably securing said cone shaped members together. said means comprising a plurality of bolts and nuts; a perforated cone. shaped battle mounted within said shell and adjacent to the inlet thereof; and a plurality of perforated. cone shaped partitions of different altitudes mounted within said shell and havin; their apices pointed toward the oullct thereof, substantiall as described.

MAINS Sllliflhlililitl.

Witnesses Josnrn IlAltRlS, IriAnn \BRA)IS. 

